BOUNDARY DAM, WA

Total of Snowfall (Inches)

(450844)

File last updated on March 28, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNANN
1965-660.00 0.00 0.00 0.00 6.00 17.00a30.10 3.80 4.00 0.00 0.00 0.00 60.90
1966-670.00 0.00 0.00 0.00 2.10 8.30 19.10 8.00b3.50 0.00 0.00 0.00 41.00
1967-680.00 0.00 0.00 0.00 7.00 21.00 23.20 6.40 0.00 0.00 0.00 0.00 57.60
1968-690.00 0.00 0.00 0.00 2.90 -----z71.10 18.60 1.10 0.00 0.00 0.00 93.70a
1969-700.00 0.00 0.00 0.00 0.00 7.50 30.10 6.70 1.00 0.20 0.00 0.00 45.50
1970-710.00 0.00 0.00 0.00 -----z-----z-----z-----z-----z-----z-----z-----z0.00h
1971-72-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1972-73-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1973-74-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00 0.00 0.00 0.00i
1974-750.00 0.00 0.00 0.00 0.00 30.60a34.50 25.20 10.50 0.50 0.00 0.00 101.30
1975-760.00 0.00 0.00 -----z6.00e-----z26.00 3.50a2.00a0.00 0.00 0.00 37.50b
1976-770.00 0.00 0.00 0.00 1.80 12.30 -----z7.50 -----z0.00 0.00 0.00 21.60b
1977-780.00 0.00 0.00 0.00 -----z23.60a24.50 11.80a0.00 0.00 0.00 0.00 59.90a
1978-790.00 0.00 0.00 -----z7.00 19.00 10.50 22.30b0.00 0.00 0.00 0.00 58.80a
1979-800.00 0.00 0.00 0.00 3.30 17.90 25.50 13.10 9.00 0.00 0.00 0.00 68.80
1980-810.00 0.00 0.00 0.00 4.00a22.50 0.90 2.00 0.00 0.00 0.00 0.00 29.40
1981-820.00 0.00 0.00 0.00 0.00 16.40 42.40 8.50a2.00 2.00 0.00 0.00 71.30
1982-830.00 0.00 0.00 0.00 11.50 26.80 8.00a5.50 0.00 0.00 0.00 0.00 51.80
1983-840.00 0.00 0.00 0.00 0.50 22.30 14.90 8.10 0.00 0.00 0.00 0.00 45.80
1984-850.00 0.00 0.00 0.00 27.50a52.10 0.10 17.60 2.50 0.00 0.00 0.00 99.80
1985-860.00 0.00 0.00 0.00 5.30 8.70 23.10a21.20 0.00 0.00 0.00 0.00 58.30
1986-870.00 0.00 0.00 0.00 7.70 11.80 8.60 2.00 2.00 0.00 0.00 0.00 32.10
1987-880.00 0.00 0.00 0.00 0.30 16.10 12.40 9.60 2.00 0.00 0.00 0.00 40.40
1988-890.00 0.00 0.00 0.00 9.30 24.10 18.60a10.30 5.30 0.50 0.00 0.00 68.10
1989-900.00 0.00 0.00 0.00 3.50 5.00a22.90 26.80 2.80 0.00 0.00 0.00 61.00
1990-910.00 0.00 0.00 0.00a8.00 36.40 21.30 2.00 9.30 0.00 0.00 0.00 77.00
1991-920.00 0.00 0.00 0.00 8.50 3.40 19.10a1.40a0.00 0.00 0.00 0.00 32.40
1992-930.00 0.00 0.00 0.00 6.30a29.30 22.80 5.50 2.30a0.00 0.00 0.00 66.20
1993-940.00 0.00 0.00 0.00 4.30 22.80 10.50 14.50a0.00 0.00 0.00 0.00 52.10
1994-950.00 0.00 0.00 0.80 24.30 17.00 7.40 1.80 2.80 0.00 0.00 0.00 54.10
1995-960.00 0.00 0.00 0.00 4.80 14.20 19.60 9.80a0.50 0.00 0.00 0.00 48.90
1996-970.00 0.00 0.00 1.00 34.10 52.70 19.80 5.80 14.30 0.00a0.00 0.00 127.70
1997-980.00 0.00 0.00 0.00 0.50 9.40 27.20 0.00 0.00 0.00 0.00 0.00 37.10
1998-990.00 0.00 0.00 0.00 0.80 20.60 14.00 20.50 3.50 0.00 0.00 0.00 59.40
1999-000.00 0.00 0.00 0.00 0.00 10.50 37.00 9.80 0.50 0.00 0.00 0.00 57.80
2000-010.00 0.00 0.00 0.00 6.10 19.20 12.50 5.50 1.90 1.00 0.00 0.00 46.20
2001-020.00 0.00 0.00 0.00 6.60 23.50 22.00 11.00 8.50 0.00 0.00 0.00 71.60
2002-030.00 0.00 0.00 0.00 0.00 18.00 14.90 0.50 2.00 0.00 0.00 0.00 35.40
2003-040.00 0.00 0.00 0.00 13.00 20.30a22.70 2.00 7.50 0.00 0.00 0.00 65.50
2004-050.00i0.00 0.00 0.00a1.00 23.80 13.00 0.00 3.00 0.00 0.00 0.00 40.80a
2005-060.00 0.00 0.00 0.00 1.00 9.00 15.70 4.70 5.00 0.00 0.00 0.00b35.40
2006-070.00 0.00 0.00 0.80 12.40b16.60a19.00 9.50 3.40 0.00 0.00 0.00 61.70
2007-080.00 0.00 0.00 0.00 6.50 37.60 23.20 9.40b7.00a1.00 0.00 0.00 84.70
2008-090.00 0.00 0.00 0.00 0.00 35.90a25.90 5.00 4.90 0.50 0.00 0.00 72.20
2009-100.00 0.00 0.00 0.00 1.50h10.00 5.20 0.10 0.50 0.00 0.00 0.00 15.80a
2010-110.00 0.00 0.00 0.00 7.00 18.80 28.10 13.50a3.90b0.00a0.00n0.00 71.30a
2011-120.00a0.00 0.00p0.00 12.00d7.40 18.30 15.70 5.90b0.00j0.00s0.00q59.30d
2012-130.00q0.00v0.00n0.00v2.30b28.40b18.10 3.00b3.00c0.00j0.00o0.00 54.80f
2013-140.00 0.00 0.00 0.00 2.70 15.90 15.50a10.50b6.00b0.00k0.00p0.00 50.60b
2014-150.00 0.00 0.00 0.00o7.80 7.30 19.70 3.00a1.00 0.00g0.00 0.00 38.80b
2015-160.00 0.00l0.00g0.00 6.60g11.00 14.20d3.70 0.00 0.00 0.00 0.00 28.90c
2016-170.00s0.00 0.00n0.00l0.00n24.50d13.20 27.60 4.40b0.00l0.00j0.00i69.70g
2017-180.00t0.00j0.00g0.00o10.10h20.40 20.20a14.40a5.50c0.30e0.00m0.00p60.80g
2018-190.00n0.00o0.00i0.00 1.80h15.00 10.50 22.40 6.50j0.00o0.00m0.00o47.90h
2019-200.00u0.00x0.00o0.00u1.00n20.40 45.20a5.50b2.50f0.00k0.00v0.00s71.10i
2020-21-----z0.00y-----z0.70v10.70j17.00c5.50f8.10e0.00f0.00j0.00x0.00y25.10j
2021-220.00u0.00v0.00 0.00 9.00 31.50a28.00 5.60c1.00b0.00 0.00 0.00 75.10b
2022-230.00 0.00 0.00 0.00 13.30a35.70a4.20e4.20b3.80b0.00 0.00 0.00 61.20
2023-240.00 0.00 0.00 0.20 1.20 8.10d18.90 5.00f2.00f-----z-----z-----z28.40e
Period of Record Statistics
MEAN0.00 0.00 0.00 0.06 6.37 19.90 20.25 9.16 3.18 0.13 0.00 0.00 59.42
S.D.0.00 0.00 0.00 0.21 7.11 10.64 11.71 7.28 3.22 0.36 0.00 0.00 21.18
SKEW0.00 0.00 0.00 3.60 2.11 1.08 1.64 0.94 1.30 3.61 0.00 0.00 1.12
MAX0.00 0.00 0.00 1.00 34.10 52.70 71.10 27.60 14.30 2.00 0.00 0.00 127.70
MIN0.00 0.00 0.00 0.00 0.00 3.40 0.10 0.00 0.00 0.00 0.00 0.00 29.40
YRS48 49 48 48 47 53 53 54 50 47 46 49 35